<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=468353
-->
<head>
  <title>Test for Bug 468353</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=468353">Mozilla Bug 468353</a>
<p id="display"></p>
<div id="content">
  <iframe></iframe>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">

var styleSheets = null;

function checkStylesheets() {
  // Evidently RemoveStyleSheet is the only method in nsIEditorStyleSheets
  // that would throw. RemoveOverrideStyleSheet returns NS_OK even if the
  // sheet is not there
  var removed = 0;
  try
  {
    styleSheets.removeStyleSheet("resource://gre/res/designmode.css");
    removed++;
  }
  catch (ex) { }

  try {
    styleSheets.removeStyleSheet("resource://gre/res/contenteditable.css");
    removed++;
  }
  catch (ex) { }

  is(removed, 0, "Should have thrown if stylesheet was not there");
}

function runTest() {
  const Ci = SpecialPowers.Ci;

  /** Found while fixing bug 440614 **/
  var editframe = window.frames[0];
  var editdoc = editframe.document;
  var editor = null;
  editdoc.write('');
  editdoc.close();

  editdoc.designMode='on';

  // Hold the reference to the editor
  editor = SpecialPowers.wrap(editframe)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIWebNavigation)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIEditingSession)
                        .getEditorForWindow(editframe);

  styleSheets = editor.QueryInterface(Ci.nsIEditorStyleSheets);

  editdoc.designMode='off';
  
  checkStylesheets();
  
  // Let go
  editor = null;
  styleSheets = null;
  
  editdoc.body.contentEditable = true;
  
  // Hold the reference to the editor
  editor = SpecialPowers.wrap(editframe)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIWebNavigation)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIEditingSession)
                        .getEditorForWindow(editframe);

  styleSheets = editor.QueryInterface(Ci.nsIEditorStyleSheets);
  
  editdoc.body.contentEditable = false;
  
  checkStylesheets();

  editdoc.designMode = "on";
  editdoc.body.contentEditable = true;
  editdoc.designMode = "off";

  // Hold the reference to the editor
  editor = SpecialPowers.wrap(editframe)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIWebNavigation)
                        .QueryInterface(Ci.nsIInterfaceRequestor)
                        .getInterface(Ci.nsIEditingSession)
                        .getEditorForWindow(editframe);

  styleSheets = editor.QueryInterface(Ci.nsIEditorStyleSheets);

  editdoc.body.contentEditable = false;

  checkStylesheets();
  
  SimpleTest.finish();
}

//XXX I don't know if this is necessary, but we're dealing with iframes...
SimpleTest.waitForExplicitFinish();
addLoadEvent(runTest);

</script>
</pre>
</body>
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